2 layers175.6 × 104 mm
Interchange pcb right
headblockhead/slab-pcb
The circuitboard and schematics for the Slab Keyboard system.
178 parts1CERN-OHL-S-2.0
2 layers125.2 × 95 mm
Interchange pcb hackpad
headblockhead/slab-pcb1The circuitboard and schematics for the Slab Keyboard system.
- Size
- 125.2 × 95 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 113
- Nets
- 87
- Pads
- 485
- Tracks, vias
- 0, 0
- Pours
- 2
- Routed
- Not yet
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 25 May 2024
- Updated
- 22 Jun 2026
Overview
Interchange pcb hackpad is an open-source printed circuit board by headblockhead, from the headblockhead/slab-pcb repository on GitHub, published under the CERN-OHL-S-2.0 licence. It is a 2-layer board of 125.2 × 95 mm with 113 parts on 87 nets.
It is built around the PCA9555PW. Its parts include 33 capacitors, 29 diodes, 9 resistors, 5 ICs and 5 connectors. It belongs with the keyboards and input boards and the RP2040 boards of this library.
Main components
1README
README.mdSlab PCB
The full PCB, schematics, and gerber downloads for the Slab keyboard project.
Downloads are in the releases section.
Layers
- The layer
User.3stores non-polygon versions of the silkscreen text elements that can be edited. - The layer
User.6stores a printable outline of keyswitch locations, so a keymap can be drawn on paper to test the layout.
Building
This project uses Nix for CI/CD only, to generate gerber files using KiCAD's CLI.
Sponsorship
The PCB prototypes for this version of the Slab keyboard project were kindly provided by PCBX for free!
Parts
113| Qty | Value | Footprint | References |
|---|---|---|---|
| 33 | 100nF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C1, C2, C10, C11, C12, C13, C14, C15, C16, C17, C18, C19, C20, C21, C22, C23 +17 |
| 20 | MX_SK6812MINI-E | CustomFootprints:LED_MX_6028R-ROT_Custom | LED1, LED2, LED3, LED4, LED5, LED10, LED11, LED12, LED13, LED14, LED15, LED16, LED17, LED18, LED19, LED20 +4 |
| 20 | MX_SW_HS | CustomFootprints:SW_choc_mx_combined | MX1, MX2, MX3, MX4, MX5, MX10, MX11, MX12, MX13, MX14, MX15, MX16, MX17, MX18, MX19, MX20 +4 |
| 9 | MX_SK6812MINI-E | CustomFootprints:LED_6028R_Custom | LED21, LED22, LED23, LED24, LED25, LED26, LED27, LED28, LED29 |
| 7 | MountingHole_Pad | MountingHole:MountingHole_3.2mm_M3 | H1, H2, H3, H4, H5, H6, H7 |
| 6 | 2.2k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R2, R7, R8, R9, R10 |
| 4 | TestPoint | TestPoint:TestPoint_Pad_D1.5mm | TP1, TP2, TP8, TP9 |
| 3 | 10k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R3, R4, R6 |
| 2 | PCA9555PW | Package_SO:TSSOP-24_4.4x7.8mm_P0.65mm | U2, U3 |
| 1 | CustomFootprints:SN74AHCT125PWR | U5 | |
| 1 | Buzzer | CustomFootprints:buzzer | BZ1 |
| 1 | Conn_01x04 | CustomFootprints:MagneticSlot_Left | J2 |
| 1 | Conn_01x04 | CustomFootprints:MagneticSlot_Right | J1 |
| 1 | SSD1306 | CustomFootprints:SSD1306_128x32 | J5 |
| 1 | Seeeduino Xiao rp2040 | CustomFootprints:Xiao_rp2040_AC_Reflow_Custom | U1 |
| 1 | TCA4307DGKR | CustomFootprints:SOIC8_DGK_TEX | U6 |
| 1 | TRRS_L | Connector_Audio:Jack_3.5mm_KoreanHropartsElec_PJ-320D-4A_Horizontal | J3 |
| 1 | TRRS_R | Connector_Audio:Jack_3.5mm_KoreanHropartsElec_PJ-320D-4A_Horizontal | J4 |
Questions
How big is the Interchange pcb hackpad PCB?
It measures 125.2 × 95 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Interchange pcb hackpad use?
113 parts, built around the PCA9555PW. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Interchange pcb hackpad KiCad files?
From the headblockhead/slab-pcb repository on GitHub, at the commit this page was made from: the board is interchange-pcb-hackpad/interchange-pcb-hackpad.kicad_pcb and its schematic interchange-connector-test/interchange-connector-test.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Interchange pcb hackpad design in my own project?
Its repository publishes it under the CERN-OHL-S-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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